FORSVARETS FABRIKSVERK
SUBMACHINE GUN
Carl- Gustaf

SUBMACHINE GUN
Carl-Gustaf
FORSVARETS FABRIKSVERK
SWEDEN
Head office:
FORSVARETS FABRIKSSTYRELSE
Address: Birger Jarlsgatan 7, Stockholm 7
Cable address: >Fabriksverket>. Tel. 223660
Factories:
CARL GUSTAFS STADS GEVARSFAKTORI, Eskilstuna
small arms etc.
AMMUNITIONSFABRIKEN KARLSBORG, Karlsborg
ammunition for small arms, aircraft machine guns etc.
AMMUNITIONSFABRIKEN ZAKRISDAL, Karlstad
fuzes, detonators, primers, cartridge-cases for
artillery am etc.
CENTRALA TORPEDVERKSTADEN, Motala
torpedoes
AKERS KRUTBRUK, Akers Styckebruk
powder, smoke producers, gas-masks etc.
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CONTENTS
SHORT DESCRIPTION
Introduction.........................................5
General features.....................................5
Principal parts......................................8
HANDLING
How the gun works....................................9
Safety..............................................10
Filling of the magazine.............................11
Loading............................................ 11
Making the gun empty................................12
Semiautomatic and automatic fire....................13
Manner of carrying..................................14
Dismantling and assembling..........................15
Folding of the butt stock ..........................17
Cleaning............................................17
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SHORT DESCRIPTION
of submachine gun Carl-Gustaf
Introduction. The submachine gun, Carl-Gustaf, is a small compact
weapon of light weight and sound construction. It is
magazine fed and operated on the blow back — heavy
bolt system. It can be fired in any position.
General	Ca liber:	9 mm Parahelium
/eature,.	Magazine.	Exchangeable magazine of box type, capacity 36 cartridges, filled by hand
Ballistics:	Weight of bullet about 7,5 g Muzzle velocity about 400 m/sec. Muzzle energy about 60 kgm Impact energy at 300 m about 28 kgm
Range:	Maximum range about 1500 m Practicable range about 300 m at semi- automatic fire and about 200 m at auto- matic fire
Rate of fire-.	About 10 rounds per sec.
Weights:	The gun except magazine 3500 g The magazine empty 230 g The magazine loaded with 36 cartridges 650 g
Dimensions:	Length with butt stock extended 808 mm Length with butt stock folded 550 mm
Accessories:	Sling Magazine bag Wiper, 2 parts, and brush Vaseline box Front sight key
5
BUTT STOCK
Buffer
BACK PIECE \ \
RECOIL
SPRING
COCKING HANDLE x
Rear sight spring
REAR SIGHT
BOLT
RECEIVER
Firing pin
Barrel sleeve nut
BARREL SLEEVE
BARREL
Front sight spring
FRONT SIGHT
Fig 4. The gun, section.
RECOIL SPRING
I	Back piece catch
BACK PIECE
Barrel sleeve nut	BARREL SLEEVE
BARREL
Ejector Guide pin for barrel sleeve
REAR SIGHT
Safety slot
Slot for cocking handle
Lock for elastic catch
Rubber cheek guard
Catch for barrel sleeve nut
e
Catch lor butt stock
— Magazine guide
Hoop for magazine guide I
PISTOL GRIP
— MAGAZINE
Magazine catch
Trigger guard
Fig 5. The gun, dismantled.
Principal parts.	The weapon has the following principal parts: barrel, barrel sleeve, receiver with back piece and firing mechanism, pistol grip, butt stock, front sight and rear sight, bolt with cocking handle and recoil spring and magazine. The barrel is mounted in the receiver and is secured by the barrel sleeve. Dismantling see page 15. The barrel sleeve is provided with a nut for screwing on to the receiver.’) On the barrel sleeve there are front sight with catch spring, front sight guard and front sling swivel. The receiver carries the bolt and the firing mechanism. On its rear part there are back piece,1) a bracket with a catch for butt stock and a rear sling swivel. In the front part the receiver is threaded for the barrel sleeve nut and provided with a guide pin and a catch for the barrel sleeve nut. On the upper side the rear sight is to be found and on the under side, the magazine guide, a magazine catch and a trigger guard. Internally the receiver is provided with an ejector. Furthermore there are locking slots for the back piece, manoeuvre- and safety slots for the cocking handle, and an ejector hole. The firing mechanism is located in the lower part of the receiver and consists of trigger and sear, which is kept in a hooked position by the sear spring. The pistol grip has two wooden grips. The butt stock is fixed in an open position by a catch. The butt stock is provided with a cheek guard. The front sight and the rear sight are of an open type. The rear sight is a flap sight adjustable for 100, 200 and 300 m. The front sight can, when a new barrel is moun- ted, bo given different adjustment by means of a front sight key, vertically and laterally.
8
The bolt1) has an action face with an integral firing
pin in the front part, feed rib and slots for extractor
and ejector. On the underside at the back there are
a cocking bent and a transverse hole, in which the
cocking handle is mounted. The rear part is shaped as
a support for the recoil spring. The extractor is movable
against a spring being held by a plate. The bolt can
be locked in the front position by pressing the cocking
handle into a hole on the left side of the receiver.
The magazine is a rod magazine for 36 cartridges. The
magazine is provided with holes so that the number of
the cartridges can be judged approximately.
’I Dismantling see page 15.
How the gun
works.
HANDLING
The action of the gun is based on the blow back—heavy
bolt system.
The cocking handle is pulled back to the cocked posi-
tion at which the recoil spring is compressed, and then
a loaded magazine is inserted in the magazine guide
until it locks.
When the trigger is pressed, the heavy bolt is released
and is driven forward by the recoil spring. The feed
rib on the bolt strips the top cartridge from the maga-
zine and drives it into the firing chamber. The extractor,
which is attached to the bolt, snaps into the cannelure
in the cartridge case and the firing pin strikes the
cartridge primer exploding the powder.
The momentum of the heavy bolt and the spring keeps
the bolt in forward position, until the bullet has left the
barrel and the pressure in the barrel has dropped to
safe limits.
The remaining pressure drives the empty cartridge case
and moving parts to the rear. The case strikes against
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the ejector and is ejected from the gun. The magazine
spring pushes the next cartridge in position for feeding.
Safety.
The gun is made safe with the bolt in the rear position.
On certain occasions the bolt can be locked in the rear
position in accordance with the following:
(a)	Safety with the bolt in the rear position:
By making safe with the bolt in the rear position the
cocking handle is raised into the special safety slot
where it is held by the recoil spring. (Fig. 6 and 7).
(b)	Looking of the bolt in forward position:
The bolt is locked in the forward position by pressing
the cocking handle into the hole in the receiver.
Fig 6. Th* gun is mode safe. Notice that the	Fig 7. The gun Is released ready for firing,
cocking handle is In the safety slot.
Safety
precautions.
1.	If a loaded magazine is inserted, the bolt may not
be brought from the rear to the forward position
for locking until the magazine has been removed.
2.	Locking with the bolt in the forward position ought
to be used only when there is a risk that the chamber
and the magazine guide can be soiled through the
ejector opening (during movements in trenches, in
snow- or sandstorms, creeping and crawling etc.).
3.	On guard-duty in peacetime the bolt ought to be
in the rear safety position.
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Filling of the
magazine.
Filling of the magazine is carried out
without magazine filler in the follo-
wing manner.
The cartridge is placed between the
lips of the magazine (Fig. 8) and is
pressed down to the held position.
The procedure is repeated until the
magazine is filled with 36 cartridges.
The filling is made easier if the maga-
zine, at the same time as the cartrid-
ge is pressed down with the thumb,
with the bottom first is tapped lightly
against any suitable object (which
does not damage the magazine).
Loading.
Loading can be done with the bolt in the rear safety
position or with the bolt in the forward locked position.
Loading with the bolt in the rear safety position.
I.	Pull back the bolt with the right hand and make
safe (Fig. 6).
2.	Remove the empty magazine.
3.	Insert a loaded magazine in the magazine guide.
4.	Release safety (Fig. 7).
The gun is now ready for firing. The change of the
magazine during combat is made as mentioned but
without safety in accordance with No. 1.
Loading with the bolt in the forward locked position.
1.	Lock the bolt in the forward position (by pressing in
the cocking handle).
2.	Remove the empty magazine.
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3.	Insert a loaded magazine in the magazine guide.
Somewhat greater force is to be used than when
loading with bolt in rear position.
The gun is now loaded with the bolt in the forward and
locked position. Before firing the bolt must be unlocked,
i.e. the cocking handle is pulled outwards and the bolt
is brought back to cocked position.
NOTE. The bolt must always be locked in the forward
position, otherwise accidental shots may be fired, for
instance in the following way (Fig. 9).
1.	The gunner has inserted the magazine with the bolt
in forward position. The bolt is not locked.
2.	The gun is knocked against the ground. The bolt is
moved rearwards from its position but has not been
hooked on the sear,
3.	but is brought forward again by the recoil spring.
4.	Accidental shots.
Making the gun
empty.
1.	Pull back the bolt and make safe (Fig. 6).
2.	Remove the magazine.
3.	Release safety.
4.	Fire (pull trigger).
(When needed the bolt is locked in forward position.)
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Fig 10. Lying position for firing.
Semiautomatic There is no fire control lever.
and automatic To fire single shots, the trigger is quickly released after
fh-e.	firing, at which the bolt is cocked in its rear position.
If the movement is performed too slowly, 2 or more shots
will be discharged.
At automatic firing the trigger is held back so long as
firing is desired. Various positions for firing are shown
in Fig. 10—13.
Fig 11. Th* gun token directly
from position in fig 17.
Fig 12. Th* gun taken directly
from position in fig 16.
Fig 13. Th* gun token directly
from position in tig. 14.
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Other positions for firing ore also possible. Observe
that the gun, in an emergency, similar to those in Fig.
II and 13, can be fired with one hand.
Manner of
carrying.
fig 14.
On the march the gun is carried on the back by means
of a sling (Fig. 14), over the shoulder (Fig. 15) or also
advantageously, thanks to the swinging butt stock, on
the breast (Fig. 16). When combat is expected the gun
can be carried either on the breast or better at the side
with the sling over the shoulder (Fig. 17).
Fig 1 5.	Fig 16.	Fig 17.
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Fig 18. Removing (he bock piece.
Dismantling The following parts (Fig. 5) can be dismantled: Back
and assembling. P'ece» recoil spring, bolt, extractor, magazine guide,
barrel sleeve and barrel.
The magazine can be dismantled.
NOTE. Ascertain that the gun is empty and the bolt in
its forward position. Grasp back piece with fore and
middle finger of right hand and press in the catch of
the back piece with thumb (through hole of the back
piece). Turn back piece a little counter-clockwise. Back
piece comes loose and can be removed (Fig. 18).
Remove recoil spring.
Remove bolt.
Strip extractor and extractor spring from bolt by pres-
sing in extractor spring plate and sliding it forward
in its slot.
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Remove barrel sleeve by unscrewing barrel sleeve nut.
For this the barrel sleeve catch must be pressed in by
means of some hard object, for instance with the front
sight key.
Remove barrel sleeve and barrel.
The magazine is dismantled by removing the magazine
bottom, after which the magazine spring and cartridge
follower can be dismantled.
More detailed dismantling should be performed by
armourers only.
Assembling is done in reversed order.
NOTES.
If the catch of the back piece should have fallen apart,
ensure before mounting the back piece, that the slots
of the catch engage with the pins of back piece (Fig. 19).
Fig 19. Position of
the back piece catch
before mounting of
the bock piece.
Wrong
Right
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Folding of the
butt stock.
In the folded position, the butt stock is secured by means
of an elastic catch.
To extend the butt stock, seize the shoulder support
with the right hand and jerk the butt stock to the right
and backwards. When the butt stock is swung entirely
back the elastic catch is locked, thus preventing the butt
stock from being folded unintentionally during firing.
To fold the butt stock, seize the upper shank with the
right hand and press the knob of the catch lock to
the left (Fig. 20).
At the same time jerk the butt stock to the right and
forwards.
At the beginning of the movement the back part of
the butt stock can be conveniently tapped against the
right hip.
Cleaning.
The gun is dismantled as per page No 15. All dirt is
removed after which the parts are oiled in the normal
manner.
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